Bathtub Ridge

The Bathtub Ridge is a manganese mine located in Alaska.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

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Site Name

Primary: Bathtub Ridge

Commodity

Primary: Manganese

Location

State: Alaska
District: Canning

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Model Name: Sedimentary Mn

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Role: Host
Age Type: Host Rock
Age Young: Early Cretaceous

Analytical Data

Not available

Materials

Ore: Psilomelane
Ore: Pyrolusite
Ore: Rhodochrosite

Comments

Comment (Workings): Workings / Exploration = Analysis of samples indicated about 5% Mn.

Comment (Reference): Primary Reference = Detterman and others, 1975.

Comment (Deposit): Other Comments = USBM OF 63-78, p. 21, Locality 23 was listed as a reference prior to the last ?review of this file. This reference was not verified by Kelley.

Comment (Geology): Geologic Description = About 53 meters (175 ft) of highly manganiferous beds crop out in the middle the of pebble-shale member of the Lower Cretaceous Kongakut Formation which is 158 meters (520 ft) thick at this locality. This manganiferous section is black, with small pellets and thin beds of sedimentary manganese carbonates; exact chemical composition of this interval not known.??The term Kongakut Formation is no longer widely used; the interval described here is currently referred to as the pebble shale unit and is widely recognized in the subsurface of northern Alaska. The pebble shale unit depositionally overlies the Kemik Sandstone of Early Cretaceous age. At Bathtub Ridge the pebble shale unit depositionally underlies siltstone (see Bird and Molenaar, 1987, Figure 5.6 A) whereas north of Bathtub Ridge, the pebble shale unit depositionally underlies shales of Early Cretaceous age, some of which are radioactive and tuffaceous.

Comment (Deposit): Model Number = 34b Cannon and Force (1986, p. 231)

Comment (Deposit): Model Name = Sedimentary Mn

Comment (Commodity): Ore Material = Manganese minerals

Comment (Commodity): Ore Material = Manganese minerals

Comment (Exploration): Status = Inactive

Comment (Geology): Age = Age of host rocks is Early Cretaceous

Comment (Geology): Age = Host rock is Early Cretaceous.

References

Reference (Deposit): Detterman, R.L., Reiser, H.N., Brosgi, W.P., and Dutro, J.T., Jr., 1975, Post-Carboniferous stratigraphy, northeastern Alaska: U.S. Geological Survey Professional Paper 886, 46 p.

Reference (Deposit): Bird, K.J., and Molenaar, C.M., 1987, Stratigraphy, in Bird, K.J., and Magoon, L.B., eds., Petroleum geology of the northern part of the Arctic Wildlife Refuge, northeastern Alaska: U.S. Geological Survey Bulletin 1778, p. 37-59.

Reference (Deposit): Cobb, E.H., Mayfield, C.F., and Brosge, W.P., 1981, Summaries of data on and lists of references to metallic and selected nonmetallic mineral occurrences in eleven quadrangles in northern Alaska (Arctic, Baird Mountains, Chandler Lake, DeLong Mountains, Demarcation Point, Howard Pass, Misheguk Mountain, Mount Michelson, Noatak, Point Lay, and Table Mountain); Supplement to Open-File Report 75-628; Part A, Summaries of data to January 1, 1981: U.S. Geological Survey Open-File Report 81-767-A, 25 p.

Reference (Deposit): Cobb, E.H., Mayfield, C.F., and Brosg?, W.P., 1981, Summaries of data on and lists of references to metallic and selected nonmetallic mineral occurrences in eleven quadrangles in northern Alaska (Arctic, Baird Mountains, Chandler Lake, DeLong Mountains, Demarcation Point, Howard Pass, Misheguk Mountain, Mount Michelson, Noatak, Point Lay, and Table Mountain); Supplement to Open-File Report 75-628; Part A, Summaries of data to January 1, 1981: U.S. Geological Survey Open-File Report 81-767-A, 25 p.

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